S-91410A745 1/4"-20 x 2 3/4" ASME B18.6.2 Set Screws
Set Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior holding power with coarse UNC threads that resist loosening under vibration and heavy loads
- Precise installation control thanks to the external square drive and square head design for secure tool engagement
- Enhanced durability and wear resistance from Rockwell B80 hardness steel construction
- Reliable thread fit with Class 2A tolerance ensuring consistent performance in industrial assemblies
- Extended reach for deep applications with the substantial 2-3/4" length
- Secure fastening in rotating components using the cup point tip design for positive seating
- Compliance with major industrial standards including ASME B18.6.2 for guaranteed quality and performance
Professional Applications & Engineering Value
This 1/4"-20 UNC steel set screw delivers exceptional engineering value in demanding industrial environments where vibration resistance and secure positioning are critical. The coarse thread spacing provides superior grip in softer materials and prevents loosening in high-vibration machinery, while the square head design with external drive ensures maximum torque application without stripping. Manufactured from hardened steel with Rockwell B80 hardness, this fastener maintains its structural integrity under repeated stress, making it ideal for permanent assemblies in automotive, manufacturing, and heavy equipment applications. The cup point tip creates a permanent dimple in the shaft material, preventing axial movement in pulleys, gears, and collars.
Specification Summary & Compliance
This set screw features 1/4"-20 UNC coarse threads with Class 2A thread fit for standard industrial applications, manufactured to ASME B18.6.2 specifications for dimensional accuracy and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industries. With a total length of 2-3/4" and square head dimensions of 1/4" width and 3/16" height, this right-hand thread set screw meets rigorous quality standards for industrial fastening solutions.
